Nielsen Hayden genealogy
Family: Gerald of Windsor / Nest ferch Rhys (F6068)
Walter fitz Other (1045-1101) 
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| Rhys ap Tewdyr, King of Deheubarth ( -1093)
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| Gerald of Windsor (1070-1117)
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Nest ferch Rhys (1085-1135)
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Maurice fitz Gerald (1100-1176)  |